Friction-heated burnishing-machine.



E M. FURBER.'

FRICUON HETED BURNISHING MACHINE.

APPucATmN min MAR. 2o. 1915.@

fzieoz.- mma Nov. 20, um.

"onirnn srAi-rns PATENT OFFCE- FREDERICK M. FURBER, OF REVERE, MASSACHUSETTS, ASSIGNOR TO UNITED `SHOE MACHINERY COMPANY,.OF-Y PATERSON, .NEW JERSEY, A. CORPORATION OF NEW JERSEY.

ERICTION-IIEATED BURNISHING-MACI-IINE.

y VSpecication of Letters Patent.

Application filed March 20, 1915. Serial No. 15,807.

To all whom it mag/'concern' Be it known that I, FREDERICK M. FURBER, a citizen of the United States, residing at Revere, in the county of Suffolk and State of Massachusetts, have invented certain Iniprovements in Friction-Heated Burnishing- Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters onY the drawings indicatinglikel Vthe amount of heat developed, and the necessary adjustment is delicate and is frequently required. The constructions heretofore used do not lend themselves to easy and iine adjustment. It is the object of my invention to simplify and improve the construction of devices of this class.

A feature of -my invention is a device capable of independent coarse and fine adjustment of the temperature of the burnishing tools.

Another feature of my invention is a de-v ceeds and will be pointed out in the claims.

A preferred embodiment of the invention in a rotary tool burnishing machine is shown in the drawings. The machine there shown has a tool carryin shaft having a ground and polished friction sleeve mounted on it between two rotary burnishing tools. The friction sleeve is engaged by a friction device whichV is adjustable along it between the two burnishing tools.

VIn the drawings; Figure 1 is a perspective of the head of the1 machine, carrying the operating parts; an v Fig. 2 is a view, partly in section, of the i friction-f device.

ratentednomao, 191)?.

The head 1 carries a bearing 2 in which 'i rotates a .shaftv 8 driven by the pulley 4fand the belt 5. The lshaft carriesthe burnishing irons 6, 7 upon its reduced outer end, 8. On the shaft between the irons 6,17 is mounted a sleeve 9 which is carefully ground, hardcned and polished. The advantage ofthe sleeve V9 is that it obviates the preparation of a surface on the relatively large'iand cumbrous shaft for frictional'cont'act. 'The surface of shafting is not so viinely finished as has been found advisable for friction surfaces. A stub shaft 10 is mountedl in alug 11 on the head 1 and extends parallel tothe shaft 3. The holder 12 is rotatably andlongitudinally adjustable Aon the `stub shaft` 10 and is clamped in desired positionby the set Vscrew 13. The holder 12 has a smooth bore 14, having an enlargement 15 at `one end.

14'is a barrel 16,'having'a iiange 17 and a lrnurled head 18. A spring`19 has one 4end mounted in the enlargement 15l and the other mounted against the flange 17.4 The holder' 12 is split at 20 and the screw 21 can be set to clamp the barrel 16. The Lower end of the barrel is internally threaded at 22, and its upper end 23 is bored out to the root of the thread. A threaded fiber rod 24 is threaded into the barrel, and has a concave lower end 25 which fits the sleeve 9.

It is evident that a rotation of the barrel 16 by means of the head 18 will move the barrel up or down on the fiber rod 24, increasing or diminishing the tension of the spring 19. The friction between thesleeve 9 and the fiber rod 24 may thus be adjusted within small limits and the generation of heat thereby controlled with considerable nicety. The liber rod is prevented from turning owing to the saddle-like grip which its surface 25 exerts upon the sleeve 9. The fiber rod has a small longitudinal hole 26 through which lubricant from the Wadding 27 seeps slowly to the friction face 25. It is Rotate-bly and slidably mounted inthe bore obvious that adjustment of the body 12 alongthe rod l0 Will alter the relative distances of the irons 6, 7 from the friction surface 25, and hence effect a control of the relative temperatures of f the two irons, as Well as a coarse adjustment of the temperature of each iron.

The sleeve 9 is not necessary in a machine embodying my invention, as the frictionV device can be arranged to bear directly on the shaft 3 if desired. In the appended claims I have used the Word .shaft to denote comprehensively the rotating element Which carries the tools, with such appurtenances as it may have, and I do not intend therefore that the termbe limited in meaning vto the member 3.

,s I-Iaving described my invention, What I claim as new and desire to secure by United ,States Letters Patent is y 4 l. A machine of the class described having, in combination, a tool carrier, a tool carried thereon, and a friction device engaging said carrier and adjustablealong it.

2. A machine of the class described having, in combination, a tool carrier, a tool mounted on said carrier, anda friction device engaging said carrier, constructed and arranged soV that' the distance of the point of contact from the tool can be adjusted.

3. A machine of the class described having, in combination, a moving tool carrier,

a vplurality of tools mounted thereon, and a stationary friction device engaging the carrier between said to'ols. Y

4L. A machine of the 'class described having, in combination, a moving tool carrier, a plurality of tools mounted thereon, and a friction device engaging the carrier between said tools and adjustable along said carrier.

5. A machine of the class described having, invcombination, a shaft comprising a friction sleeve, ay plurality of tools mounted on the'shaft, and a. friction device engaging said sleeve.

6. A machine of the class described having, in combination, a moving shaft, a holder, and a friction device comprising two relatively adjustable elements mounted in said holder, one of said elements engaging said shaft.

7. A machine` of the class described having, in combination, a moving shaft, a holder, and a friction device Hcomprising tivo threaded elements mounted in said holder, one of said yelements having a concaveycontact surface to bear (against said shaft. y j

8. A machine of the class described havingi`n combination, a fmoving shaft, and a friction device having a concave Contact surface bearing on saidshaft', andadjustable While maintaining the angular relation of its concave contact rsurface to the shaft.

9. A machine of fthe class described having, in combination, va moving shaft, a holder, an element rotatably and resiliently mounted in sa-id holder, and a friction piece in adjustable engagement With said element an'dengaging said shaft.

10Q A machine of the class described having, in combination, a moving shaft, a

holder and a friction element resiliently mounted in the holder, engaging the shaft, and having a lubricating channel.

ll. A machine of the class described having, in combination, a moving carrier, a plurality of irons mounted thereon, and a friction device for heating the irons so constructed and arranged that-the relative temperature of the irons may be controlled.

In testimony whereof VI have signed my name `to this specification.

FREDERICK M. F URBER.

Copies of this patent may be obtained for v'e Vcents each, by addressing the Commissioner of Patents, Washington, I). C. 

